“At weddings, bar mitzvahs, and when making honorary donations, Jews often give gifts of money in multiples of 18, symbolically giving the recipient the gift of “life” or luck. So, make a donation in honor of a friend, and be sure to wish them a long life by multiplying by 18!”
I doubt my mother ever went to a Jewish wedding or any of the other events. Have you been seeing dead folk for long? A mental health assessment might be an idea!